MP3 playback through the PC speaker in MS-DOS
Claude was prompted to write an MS-DOS program that plays MP3 audio through the motherboard speaker with no sound card, using the 1-bit DAC trick.
The full story
In the late DOS era some games played music through the motherboard speaker using a 1-bit DAC hack. The poster wondered whether Claude could play back an MP3 that way, and says it did, with no soundcard needed. The post gives no further detail or evidence of how it was built or tested.
How it was done
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Sources
From a short post by the maker, so the details are as they tell them.
- Reddit: i prompted sonnet 5.5 to make ms dos mp3 to pc speaker playback without needing any soundcard
The maker's post on r/ClaudeCode.
The poster has deleted it, but the original is still readable (it can take a few seconds to load): archived copy of Reddit: i prompted sonnet 5.5 to make ms dos mp3 to pc speaker playback without needing any soundcard (opens in a new tab)